Echinenone
海胆酮, β-胡萝卜素-4-酮
🗣️ 情景例句
I'm Elsa Tobin. How do you do?
我叫Elsa Tobin ，你好。
Jack of all trades is of no trade.
万事皆通，一无所长。
It comes nearer to the engines with which man has 'conquered' the air, as he boasts.
它更近乎于人类自夸的“征服”了空气的发动机。